let SYSTEM_INFO = uni.getSystemInfoSync()
export const getStatusBarHeight = () => SYSTEM_INFO.statusBarHeight || 15
export const getTitleBarHeight = () => {
	if (uni.getMenuButtonBoundingClientRect) {
		let {
			top,
			height
		} = uni.getMenuButtonBoundingClientRect()
		return (top - getStatusBarHeight()) * 2 + height
	} else {
		return 40
	}
}
export const getNavBarHeight = () => getStatusBarHeight() + getTitleBarHeight()